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Bosch 750 Magnet Retainers

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  • Bosch 750 Magnet Retainers

    I know a few people are struggling with magnets at the moment, just wanted to share what I have done.

    There are 4 wedges that slot down between the magnets with M3 threads in both ends of all wedges. These wedges replace the existing spring retainers. The wedges are then held together with two 3mm ali disks at each end of the magnets.

    The wedges also have M5 threads in the case side face, with screws that go through the case using the existing rectangular slots that normally hold the retaining spring in place. Using alternating ends to these slots will stop the whole magnet assembly from moving along the case.

    Hope this idea helps you out. Its a fairly complicated solution. But I don't trust the normal springs as they have failed in the past event when bolted in.

    I am happy to supply drawings to anyone who wants to make some sets for themselves. I may make a batch if there is interest and work is quite and they don't mind me doing so.

    Pic 1 - Close up of the wedge
    Pic 2 - All 4 wedges
    Pic 3 - Ali ring and screws inserted.
    Pic 4 - Offset screws in rectangular slots.
    Attached Files

  • #2
    Nice ed looks good

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    • #3
      Ed, that looks great indeed.

      I used about the same wedges for the bosches for Gravity in combination with gluing the magnets with Loctite 326.



      And welding the front plate of the bosch is also a must have.

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      • #4
        Great info guys, I am interested in the cad drawings ed if that is possible, also interersted if geeting the rings cut on a water jet would be lots easier then using a miller or laithe depending on your maching prefferneces bit would probaly need quite a few sets for the price to come down enought, I will get my new gearbox plates water cut so putting them on the order could be an option.
        Thanks for photos and info is great removes the guess work

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        • #5
          Is the cross section for the wedge a standard bar or did it have to be custom machined?

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          • #6
            Custom machined.

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            • #7
              Adam, I will sort out the drawings tomorrow. I used a amada punch to make the end rings.

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